Reward the right behavior

A 13-year-old sports fan is taking his time looking through every single poster in the store. This little store, The Sports Page, was about a mile and a half from his house and he would ride his bike or scooter there anytime he had at least $7 in his pocket. He would go after church on Sundays if he couldn't make it on Saturdays because of basketball, soccer, baseball, wrestling, track or tennis activities. This kid was really into sports.

The boy didn't have an allowance, so coming up with $7 for a new Michael Jordan poster for his bedroom was a big deal. A few bucks tucked inside birthday cards could mean a new poster, but what if it could become many posters, he wondered. Those birthday dollars became the seed money he needed to start his poster-buying enterprise.